Constant-velocity joint
Videos
A constant-velocity joint is a mechanical connection between two rotating shafts, that keeps them rotating at the same speed, while allowing the shafts to be at an angle to each other as they rotate.
Tracta Joint
Rzeppa joint (compared to a 1 euro coin)
A diagram of a Thompson coupling
Molybdenum disulfide
Videos
Molybdenum disulfide is an inorganic compound composed of molybdenum and sulfur. Its chemical formula is MoS2.
Constant-velocity joint
…to physical or chemical damage. Metal armour and kevlar sleeves/covers may be used to protect rubber CV boots. The CV joint is usually lubricated by molybdenum disulfide grease. The six spheres are bounded by an anti-fall gate that prevents the spheres from falling when the shaftings are perfectly aligned. Hardy Spicer…
Molybdenum disulfide
Molybdenite
Electron microscopy of antisites (a, Mo substitutes for S) and vacancies (b, missing S atoms) in a monolayer of molybdenum disulfide. Scale bar: 1 nm.
A tube of commercial graphite powder lubricant with molybdenum disulfide additive (called "molybdenum")